20% water change advice please.

cyberblade 918c

Hi folks,

I have kept cold water fish for approx 6yrs now - (still have 3 of the fish from my first tank 6yrs ago )

I have recently bought a 90ltr tank and have started a tropical tank - using all the cycling advice and other great advice on here;) So far its all going well - I have a pair of mollies, 4 sword tails and approx 6 guppies (had 7 but one was either kidnapped or abducted by aliens as he has been missing for 2 weeks lol)

Totally noob question:
I normally plug out the heater approx 10mins before emptying 20% of the water (so as to avoid it cracking when fresh water is poured in) and im just wondering is the temp change in the water during the water change dangerous to the fish and is there anything else I should be doing,

Thanks in advance

CB

Sleepy

I tend to fill the 5l bottles I use to fill my tropical tank with the mixer tap in the kitchen letting me mix hot and cold water to approximate the temperature of the water already in the tank...

cyberblade 918c

Sleepy wrote: »

I tend to fill the 5l bottles I use to fill my tropical tank with the mixer tap in the kitchen letting me mix hot and cold water to approximate the temperature of the water already in the tank...

Cheers .... good idea that - will try that the next time round - instead of the garden hose :rolleyes:

paddy147

Sleepy wrote: »

I tend to fill the 5l bottles I use to fill my tropical tank with the mixer tap in the kitchen letting me mix hot and cold water to approximate the temperature of the water already in the tank...

I hope you use tapsafe solution with the mixing of and use of hot and cold tap water.:)

fred funk }{

I use boiled water from the kettle to equalise the temperature. I wouldn't put water from the hot tap into the tank. If its not good enough to drink then it's not good enough for the fish to live in. :pac:

paddy147

fred funk }{ wrote: »

I use boiled water from the kettle to equalise the temperature. I wouldn't put water from the hot tap into the tank. If its not good enough to drink then it's not good enough for the fish to live in. :pac:

My other half does that with the small tanks (boils the water) and with the large tanks,she fills up a 120 litre black bin with boiled water and then mixes it with cold water to get the correct temp.

.She still mixes in the correct amount of "tapsafe" though.Then she pumps it up and into the large tanks in 1 go

It saves the back breaking work for her.:D

Sleepy

paddy147 wrote: »

I hope you use tapsafe solution with the mixing of and use of hot and cold tap water.:)

Wouldn't use it myself. Since going with Silverfish's recommendation of Prime I've noticed the derision some of the guys in Seahorse have for the interpet stuff. Maybe it's just one of them that feels that way but the reaction was so strong, I've avoided their medications etc. since.

Draupnir

Sleepy wrote: »

Wouldn't use it myself. Since going with Silverfish's recommendation of Prime I've noticed the derision some of the guys in Seahorse have for the interpet stuff. Maybe it's just one of them that feels that way but the reaction was so strong, I've avoided their medications etc. since.

I avoid that stuff too, it's Stress Coat for me, haven't tried Prime. But I think it's fair to say that we all have a tendency to stick to something once we become happy with results. I started out with JBL Biotopol but I was never quite happy with it.